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A131086 as a simple table

na(n)
01
13
21
31
45
51
63
75
87
91
101
119
1211
139
141
153
169
1721
1819
1911
201
211
2213
2329
2441
2529
2613
271
283
2913
3043
3169
3271
3341
3415
351
361
3717
3855
39113
40139
41113
4255
4317
441
453
4617
4773
48167
49253
50251
51169
5271
5319
541
551
5621
5789
58241
59419
60505
61419
62241
6389
6421
651
663
6721
68111
69329

[1,3,1,1,5,1,3,5,7,1,1,9,11,9,1,3,9,21,19,11,1,1,
 13,29,41,29,13,1,3,13,43,69,71,41,15,1,1,17,55,
 113,139,113,55,17,1,3,17,73,167,253,251,169,71,19,
 1,1,21,89,241,419,505,419,241,89,21,1,3,21,111,
 329]